* osdcomm.h: Move definition of EQUIVALENT_ARRAY to coretmpl.h

* sharc.cpp, gt64xxx.cpp, ym2413.cpp, gb_lcd.cpp, snes_ppu.cpp: Use STRUCT_MEMBER for save state registration

* gio/newport.cpp, megadrive/svp.cpp, nes_ctrl/bcbattle.cpp, arm7.cpp, tms9995.cpp, pckeybrd.cpp, sa1110.cpp, sa1111.cpp, jangou_blitter.cpp, vic4567.cpp: Use std::fill(_n) instead of memset

* emucore.h: Remove obsolete typedef